Process of producing joint-making packing



Patented Jan. 20, 1925.

PATEN QFFEQE.

PROCESS OF PRODUCING JOINT-MAKING PACKING.

No Drawing.

To all whom it may concern:

Be it known that we, FRANZ ANDRASEK and Josnr DnnoHsLER, citizens of the Republic of Czechoslovakia, residing at Zilina, Czechoslovakia, have invented certain Proc esses of Producing Joint-Making Packing, of which the following is a specification.

This invention relates: to a joint-making packing of the kind composed of a powder of soft metal which is mixed with asbestos, graphite and a viscous lubricant, and more particularly to a method of comminuting the metal, its object being to produce uniform metal particles capable of rendering the packing very elastic and durable. This object is achieved according to the invention by pouring the molten metal into a bag of refractory sieve material and rubbing said bag against a warm plate until the greater part of the metal has passed through in the form of grains or as a powder.

The metal may consist of lead or an alloy Application filed November 2, 1922.

Serial No. 598,696.

of such. The bag may be made out of a muslin of suitable mesh which is rendered refractory in known manner, for instance by impregnation with alum and ammonium sulphate.

We claim:

1. A method of comminuting soft metal for use with joint-making packing, consisting in pouring the molten metal into a bag of refractory sieve material, and rubbing the bag against a warm plate until the greater part of the metal has passed through in the form of a powder.

2. A method of comminuting soft metal for use with joint-making packing, consisting in pouring the molten metal into an impregnated, refractory muslin bag, and rub hing said hag against a warm plate until 40 the greater part of the metal has passed through in the form of a powder.

FRANZ ANDRASEK. JOSEF DRECHSLER, 

